
Matvei B
Backend Developer
Skills

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Work experience
Backend Developer
LiberSave • Full-time
Jun 2025 - Present • 11 mos
Project Overview: A European B2B/B2C platform that helps businesses attract new customers and drive repeat purchases through digital loyalty programs. Role: Backend Developer / Technical Support Engineer Responsibilities & Achievements: - Payment Integrations: Integrated payment solutions and provided dedicated technical support to over 50 merchants, achieving a key KPI for successful client onboarding. - AI & LLM Implementations: Independently analyzed and processed datasets using LLM models. Tested generative neural networks to produce high-quality visual materials for publications. Authored comprehensive documentation for the company's internal LLM features. - Full-stack Optimization: Developed merchant interfaces based on Figma designs. Researched and implemented optimal solutions for rapid development: utilized react-email for building responsive email templates and react-pdf for generating multi-page PDF documents. Code Quality Assurance: Configured and integrated linters (Ty and Ruff) across microservices, standardizing the codebase and significantly reducing potential bugs.
Developing web solutions for SMBs
WebFin Oy • Part-time
Oct 2023 - May 2025 • 1 yr 7 mos
Project Overview: Agency-style development of modern, user-friendly, and responsive websites for small and medium-sized businesses (SMBs). Role: Backend / Frontend Developer Responsibilities & Achievements: - Full-stack Development: Created prototypes and fully functional demo websites based on WordPress. - Frontend & Responsiveness: Built responsive layouts strictly adhering to Figma designs, ensuring pixel-perfect rendering and cross-device compatibility. - Team Collaboration: Actively participated in daily Agile stand-up meetings, ensuring workflow transparency and timely delivery of tasks (meeting deadlines and SLAs). - Analytics & SEO: Integrated web analytics tools (Google Analytics, Google Tag Manager) and optimized website loading speeds using WP Rocket.
Freelancer Marketplace
LocalJobz • Self-employed
Oct 2022 - Oct 2023 • 1 yr
Project Overview: A local startup - a job marketplace connecting clients and freelancers. Role: Backend Developer (Outsourced) Responsibilities and Achievements: MVP Development from Scratch: Actively participated in designing and launching the first working version of the product (MVP) within tight startup deadlines. Backend Architecture: Configured routing and middleware for handling HTTP requests using the Django framework. API & Payments: Independently designed and implemented integration with external payment systems via APIs, enabling the platform to process real user transactions.